Sewing machine thread passing structure and sewing machine

Abstract

The invention provides a sewing machine thread passing structure and a sewing machine. The sewing machine thread passing structure comprises a first thread clamping device, a second thread clamping device, a first threading plate, a thread picking plate, a thread passing plate, an upper curved needle and a lower curved needle; the thread picking plate is rotatably connected with a machine body of the sewing machine; the thread passing plate is provided with a first thread passing part and a second thread passing part; a first needle thread sequentially penetrates through the first threading plate, the thread picking plate, the first thread passing part and the upper curved needle through the first thread clamping device; and a second needle thread sequentially penetrates through the first threading plate, the thread picking plate, the second thread passing part and the lower curved needle through the second thread clamping device. The first thread passing part and the second thread passing part are arranged on the thread passing plate to pass threads respectively, so that the thread storage amount and the thread use amount of the upper curved needle and the lower curved needle can be stabilized, various sewing processes such as thin, medium and thick material overlocking and the like can be met, smooth thread outgoing and flat and attractive stitches can be ensured, and meanwhile, the product quality can be improved.

Description

technical field [0001] The invention relates to the technical field of sewing, in particular to a sewing machine thread passing structure and the sewing machine. Background technique [0002] Overlock sewing machine is also called side car, edge machine, overcoat car or bone car. It is generally divided into three threads, four threads, five threads and six threads. The main function is generally to prevent the seam of the garment from fluffing. The overlock sewing machine can be used not only for hemming, but also for sewing T-shirts, sportswear, underwear, knitting and other fabrics. [0003] The overlock sewing machine is a relatively complicated and precise sewing machine. Its main components are the needle mechanism, thread hook mechanism, thread take-up mechanism, feeding mechanism, cutter mechanism and cloth lifting and pressing mechanism. When the main shaft rotates, the transmission mechanism drives the machine Needle mechanism, looper mechanism, feeding mechanism ...

AI Technical Summary

Problems solved by technology

[0004] During the use of the traditional overlock sewing machine, it was found that when overcoating thin materials, there are often problems such as unsmooth thread exit, uneven stitches and unsightly appearance. After investigation, it was found that the amount of thread storage and take-up of the upper and lower loopers was unstable. Related, and there is no good solution at present, which makes the traditional sewing machine structure cloth limited in scope of application

Images